Boone, Daniel R. The voice and voice therapy / Daniel R. Boone. - 3rd ed. - Englewood Cliffs : Prentice-Hall, 1983. - x, 277 p. : ill. ; 24 cm. Open access. ISBN: 0139431187 LCCN: 8213139 Subjects--Topical Terms: Voice--Care and hygiene.Diseases.Speech therapy.